Pipe cutter



. Dec. 19, 1922. 1,438,991. W. R. FOX ET AL.

PIPE CUTTERlv FILED xuLY 31. 1920. 4 SHEETS-SHEET 2.

@ttor nag Dec. 19, 1922.

1,438,991. W. R. FOX ET AL.

PIPE CUTTER.

FILED JULY 31. 1920. 4 SHEETS-SHEET 4.

llatented Dec. i9, i922.

WILLAM R. FOX AND HGV/*ARD D. CORVV'IN, 0F JOKSN, IJIICHGAN, ASSIGNORS,BY DIRECT AND M ESNE ASSGNIEENTSVTO FX T\E.CHINE COMPANY, OF JACKSON,MICHIGAN, A CORPORATON OF FCHIGAN.

PIPE CUTTER@ Application filed July 31,

Be it lrnown that we, VJILMAM ll. For and Hownnn D. Conwln, citizensofthe United States, and residents of Jackson, Michigan, have inventedcertain new and useful Improvements in Pipe Cutters, of which thefollowing is a specification.

The invention relates to pipe cutters and consists in the t'eatures andcombination and arrangement of parts hereinafter described andparticularly pointed out in the claims.

ln the accompanying drawings Figure 1 is a perspective view oi thecomplete equipment.

Fig. 2 is a vertical sectional view `from liront to rear of the cuttingmachine.

Fig. 3 is a horizontal sectional view through the cutter and theswinging 'rame carryingthe same and the power transmission gearing.

Fig. 4lis a side View olf the head of the auxiliary pipe support.

Fig. 5 is a side View ol pipe supporting:

IDGLIIS.

Fig. 6 is a sectional plan view of the pipe supporting means oi' Fig. 5.

In these drawings the cutterl is shown mounted on an arbor 2 which hasits bearings in the two arms 3 olf a 'trame 1 which .is mountedcoaxially with shaft 5. The trame 4 has sleeves pressed into the samewhich turn in bearings afforded by the standards 31. The shaift is thedrive shaft from which power is transmitted to the arbor of the cutterthrough the train of gears 6, 7, 8, 9, 10. The gear 6 is keyed on thesaid drive shaft, and meshes with the gear 7 forming the larger part oithedouble gear of which the smaller part is shown at 8. These gears 7and 8 turn about a journal pin or rod 11 which is shouldered at 12 tobear against the side of the swinging frame or arm, the said rodbeingheld by a nut 13 and'washer 1 4, which latter bears on the oppositeside of the swinging iframe.

The smaller gear Si meshes with thegear 9 mounted on a pin or rod 15shouldered Vat 1G to bear on one tace ot the swinging iframe or arm,which pin is held in place by a nut 17 and washer 18. rlhis pin does notgo entirely through the swinging frame but only into the interior recessor opening 19 therein. The nut, however, is exposed in this open ingsothat it can be manipulated.

i920. serial No. 400,331.

rllhe .bolt or rod y11, however, extends through the frame or swingingarm.

rlhe two arms 3 of the swinging frame are joined integrally at 20.

The gear 10 is keyed to the arbor 2, and this arbor removably held inthe frame arms 3 by a nut and washer 21, When this nut is removed thearbor 2 can be pulled out, tonwliieh purpose it has a handle or knob 23and the cutter will then drop out.

The arbor is of square or rectangular formation at f', and the cutterhas a round hole kin it litting over this square portion, the diagonaloi which is slightly greater than the diameter oi the portion 2 or' thearbor. The cutter is heldvby collars 2li, one on each side, which havesquare holes in them litting on the square part of the arbor. The cutterIhas holes into which pins 26 carried by one of the collars project. Thearbor is shouldered at 27 to hold the collar and cutter arrangement.

The train oiL gearing is enclosed in a housing which is screwed toltheswinging arm at 29 and is hungfon the shaft and is also heid on theswinging arm by engaging the bolt or rod 1l. rllhe housing is open at 30so that access maj,7 be had to the knoby 23 for withdrawing the arbor.lThe shalt 5` may be driven by a belt and pulley the usual VHxed andidle pulley being shown at A, F ig. l, or this sha'lt may be driventhrough suitable connections lleaching from an electric motor mounted onthe main frame. The shaft 5 has its bea-rings in sleeves of the traine lwhichbear in the standards 81 extending up froi'nthe main traine 32. Theswinging iframe or arm has a depending arm or Aportion 33 extending downinto the main trame or base, the lower end ot which has a block 341pivoted or ournalled therein which receives a rod 35, the rod beingpositioned in said block by a collar 3G thereon bearing on the block and:i collar B7 pinned on the screw threaded extension il?. This extensionpasses tl'irough a bearing 39 on a lever 1l-9 pivoted at its upper endat ell and having its loner end connected by a linlr 112 to a .lever11B, pivoted at and extending for# ward, and having a foot pedal 15 atits front end. The lever is counter weighted at d6.

` Doivnward pressure from the toot ot thev operator exerted ony thetreadle will causey carried by a stand, 4S removably mounted onYthe'base `ofthe machine and when the cutting has been performed theframe or swinging arm will be restored to its elevatedv position by thecounterweight 46. Both of the bearings 34 and 39 are turnable toaccommodate the different relative positions assumed by the arm 33 andlever 40 in swinging from different centers.

ln order to initially set or adjust the cutter carrying arm so that theuppermost positionl ofthe cutter may be varied we employ a hand crank 49at the front of the machine, on a shaft section 50 connected by auniversal coupling 5l with a shaft section752 which is in turn connectedthrough a universal joint 53 with the rod or shaft 35 before mentioned.By turning this hand cranlrfthe screw threaded extension 38 willberotatedI and the extension will screw itself rthrough the block orbearing 39 which now acts as a nut. This will move the lower end of thearm 33 either forward or backward according to the direction in whichthe'hand crank 49 is turned, and hence the cuttermay be initially set atdifferent elevations so that if small diameter pipes are beingcutvthe-cutter will be set low and the operator will not have to pressthe pedal 45 sofar down as will be the case if alarge pipe is being cutin which case the cutter would be initially set higher.

The shaft portion 52 is composed of two sections 52, 52 one slipping inthe other so that the arm 33, 3 may swing back and forth but yet theconnection is maintained between the adjusting means 38 and the crank 49so that the cutter carryinof arm may be set in its different initialpositions.

We have provided two handles at 54 which will assist the operator inbearingdown'on the foot pedal. The leverage is such that the ratio is 2Oto l, that is, a pressure of one hundred pounds on the pedal will givetwo thousand pounds at the cutter.

Uur equipment also includes means whereby the pipes may be supported atdifferent heights from the top of the main frame or base and hence inrelation to the cutter. It will be understood that in order to cut pipesvarying so greatly in diameter from gf to 6 it is not desirable to havean equipment which will require the cutter to move vertically a distanceof 53,- or 6. Neither is it good construction to have a pipe supportadjusted vertically. Furthermore the rollers upon which the pipe restsshould be spaced apart according to the diameter of the pipe which is torest thereon. For large diameters the rolls should be spaced apartfurther than for smaller diameter pipes. 7e therefore provide, as a partof thepresent apparatus a plurality of stands of pipe supporting rollsof difterent diameters, diiiferentspacing and of different heights.vrFliese diHerent' stands of rollsare shown in `Figurel at B, C, and475," the latter being inposition 'on the base of the machine. Therolls47 are held in a bracket 48 removably secured to the base of the machineby bolts, one of which is shown at 55. The stand of rolls B is for smallsize pipe andfhence the rolls are of small diameter, their axes areclose together and the bracket b which carries them at its upper-end isavhigh bracket.

That for the rolls 47' isthe next lowest stand, andthe stand of rolls Cis the lowest and its rolls pare of larger diameter than eitherof theother sets.

Either stand may be quickly attached to the base ofv the machine orremoved therefrom andanother one put in its place. No adjustment of therolls is needed and in changing from one diameter of-pipe to another itis only necessary to select the stand of rollsbelonging to that diameterof pipe it is intendedto-cut and place this onthe machine', thusfacilitating the carrying on ofthe work in an accurate andpredeterminedr way. This ayoidsladjustment on the operators part who maybe a comparativelyl unskilled man.

ln order to furnish a support for the outerend ofthe pipey we haveprovided a stand D carrying the supporting rolls. `While `this forms a-part of'` my present organization I prefer to make this stand as anelement separate from the main base 32 of the machine. At carries at itsupper end a fork 56 in which are journaled plates 57.

`These plates have a plurality of sets ofrolls journaled therein *markedBf, C, and 47. rihese rolls are respectively companion sets to the setsB, C, and 47.`

The plates 57 may be turned in the forks to bring either pair 'of rollsuppermost to afford asupport for the outer end of the pipe according toits diameter.

In Figs; 5y and 6 we'show supporting rolls for-the pipes having ribsAand recesses, the twovrolls interlocking as shown in Fig. 6. lith thisarrangement it is possible to cut the smallest `pipe that is laid ontothe rolls. y The centers of the rolls and theY positions of the rolls,as shown in Fig. 5, in relation to the cutter, is such that with thecutter revolving inv the directiony of the arrow in Fig. 5 it tends tohold. the tube in position while l.it is being cut.` The maximumdiameterof pipe which this-construction will accommodateis shown at fcandthe minimum at y.

We'. have also provided means whereby thervcutter may be ground, and wehave shown at E a grinding attachment which insee-ei these two sectionsmay be connected in anj7 suitable way, as by a lrey located in une ofthe members andy slidable 1n a groove in the other men'ibei'. f

ln Fig. 3, we show means for conducting lubricantI to the edge of thecutting tool, this involving a passageway 20 in the arm e and a pipe 20connecting with said passage* way and having a forked end embracing theedge of the cutter'. rlhe lubricant may be conveyed to the passage 20 byany suitable flexible connection and thelubricant after being deliveredto the edge of the cutter will run down into a receiving chamber in thebase of the machine to be pumped back through the kflexible connectionand pas` swivel block or bracket .e2 in its extreme pol sition. Thescrew e3 will advance or retract the motor and grinding wheel so thatthe grinding wheel may be passed over the edge of the cutter to besharpened and there is also a screw at by which' the swivel blockandgrinding wheel may be adjusted to determine the amount of out andthis compensates for the difference in diameter between the cutter discand the grinding wheel.

Referring to the cutter this `as stated has a round hole. Oneyreason forthis is that the cutter being narrow, the pressure would cause it to cutinto the shaft and. dest-roy its driving power. Another reason is thatitis more di'liicult to malte the cutterwith a square hole and have it runtrue. Even though the corners are well rounded, when the cutter ishardened, contraction and enpausion is apt to start a crack in the cor-`ner. lille therefore drive the cutter from the two collars by means ofthe pins 26. These plus are mounted in one of the collars and extendthrough the cutter and into the opening in the other collar and bothcollars serve as driving meansbecause they are mounted on the squareportion of the shaft, each having square opening for this purpose.l/Vhat we claim is y p l. A pipe cutter comprising` a *,support for thepipe, a cutter, a swinging' frame" having a substantially horizontal armon which the cutter is mounted and a depending arm, a drive shaft at thejunction of said arms on `which said swinging frame turns gearingbetween said drive shaft and the cutter anda treadle with connections tothe depending arm, substantially as described.

2. ln combination in a pipe cutter a drive shaft, a frame turnable aboutthe drive shaft and having two arms, an arbor -joiu'naled in said arms,a disc cutter encircling the arbor between the arms but free fromdriving Contact therewith, said arbor hai/ing a rectangular portionreceiving the cutter and collars at the sides of the cutter havingrectangular openings to lit the rec.- tangular portion of the arbor,said collars driving 'the cutter, said arbor being rcn'iovable from thearms of the frame and from the cutter and collars, substantially asdescribed.

S. In combination in a pipe cutter a swinging i'raine having arms, anarbor mounted .in the arms having a shoulder and a portion adjacent thesaidy shoulder rectangular in cross section, a cutterl encircling thearbor, but iree from driving contact therewith, collars at the side ofthe cutter mounted on the rectangular portion and having rectangularopenings to fit said portion and means connecting the cutter with one ofthe collars so that the cutter is driven by the collar, substantially asdescribed.

Li. ln combination in a pipe cutter a swing ing ame having arms toreceive a cutter between them, an arbor mounted in the arms having ashoulder, a rectangular portion adjacent the said shoulder and locatedbetween the arms of the frame, a cutter mounted. on the rectangularportion, a driving collar alongside the cutter and bearing against saidshoulder, a second shoulder on the arbor carrying a bearing portion forthe said sec ond shoulder', one of the arms and means for holding thearbor removably in place and driving means for the arbor on the outerside of one of the armsand mounted on the arbor, substantially asdescribed.

5. ln combination a swinging frame having arms to receive a cutterbetween them, an arbor mounted in the arms, a cutter on t-he arbor, adrive shaft about which the swinging frame is turnable, gearing betweenthe drive shaft and the arbor of the cutter, pins upon which a part ofsaid gearing mounted on the outer si de of one of the arms and a housingsecured to the swinging arm turnable therewith about the drive shaft andheld by a projection of one of the said pins on the outer side of one ofthe arms,

`said housing enclosing the gearing, substantially as described.`

6. ln combination in a pipe cutter, a base, a swinging frame carryingthe cutter and having a portion depending below the top oi the base, a`lever for operating the frame and means for adjusting the frame inrelation to the lever whereby the initial position `oi the cutter may bedetermined, said lever and adjusting means being mountedon the base andconnected withthe depending portion of the swinging frame, substantiallyas described.

7. In combinationin a `pipe cutter, a rest forthe pipe, a swinging tramecarrying the cutter, a ibase or stationary trame upon which the swinging'frame is mounted, toot operated lever mechanism mounted on thestationary frame, a connection between the lever mechanism and' theswinging trame and hand operated means mounted on the stationary iframeA'for adjustingthe said connectionbetween the lever mechanism and theswinging frame, substantially as described.

8. Incombination in a pipecutter, a rest for the pipe, a swinging iframecarrying the cutter, a base or stationary trame upon which the swingingAtrame is mounted, lever mechanism mounted on the stationaryframe, aconnection between the lever mechanism andthe swingingvframe and meansmounted on the stationary vtrame i'or adjusting the said connectionbetween the lever mechanism and the swinging frame, saidmeans includinga crank and a flexible shaftibetween the said crank and the saidconnections, substantially as described.

9. In'combination in a pipe cutter, a1rest for the pipe,a'swingingframek carrying the cutter, a base or stationaryiframe uponwhich the swingingframe is mounted, lever mechanism mount-ed on thestationary frame, a connectionfbetween the lever mechanism and theswinging frameA and means mounted on the stationary frame for adjustingthe said connection between the lever mechanism and the swingingframe,said means including a crank and a flexible shaft between the saidcrankand the said connections, said'flexible shat't being extensible,substantially' as described.

l0. In combination. in a pipe cutting-,machine, a rest for the pipe, acutter, a swinging trame carrying the said cutter, said frame having adepending arm, a main base trame,.a lever mounted thereon and dependingfrom its pivot, a connection between the said lever Vand the-dependingarm of the swinging cutter frame, said connection ex tending trom thelower end of thedepending arm to a point in the depending lever 'belowthe pivot thereof, and a treadle connected with the dependinglever,substantially as described.

ll., In combinationin a pipe cutting ma-` chine a rest for the pipe, acutter, a swinging frame carrying the said cutter, said frame having adepending arm, a main base frame, a lever mounted thereon and dependingfrom its pivot, a connection 4between the said lever and thedependingarm of the swinging. cutter trame', .a treadle connected withthe depending lever, and hand power means, with a power'transmittingdevice-extending to said connection orfadjusting the connection betweenthedepending lever and the dependingl army ot the swinging frame toinitially set 2the cutter in relation -to the pipe support,substantiallyjas described.

l2. Incombinatioiixin a pipe cutting machine a main base frame, aswinging trame mounted Athereon and carrying a cutter, said swingingiiramefhaving adepending arm, a lever pivoted at its upper end vto themain iframe anddependingtheretrom, a screw rod connect-ion betweentlielever and the dependingarm ot' the .swingingframa a flexible and(extensible shaft connected with the screw rodl andextendingsubstantially icoaxially therewith, means yfor turning .the flexibleshaft tor turningthe screw rod and tov adjust thedependingllever and thede* treadle with the swingingframe and means journaled onthe base frameat afpointfabove the treadle having power transmitting connectionsextending therefrom to the said adjustable. connecting means foradjusting the swinging frame initially to set the cutter, substantially.asdescribed.

14. In combinationin a pipe cuttingapparatu's, acutter, a movablesupport therefor, means for operating., the support to move the cutterto and` from its work, and a plurality of sets of rollers :forsupporting the pipe, and brackets for supporting the said rollers therebeing a bracketforeach set of rollers and means for attaching thebrackets to the base..frame of the apparatus, said brackets beingof'difi'erent heights and the sets of rollers being interchangeabletoVbe fixed at one point on. the main base frame to accommodate pipe ofdifferent diameters, the rollers of one set being of different diameteryfrom the rollers of the other set,-

the smaller diameter rollers being mounted inv the higher bracket andwith their axis nearer togetheizthan the larger diameter rolls,substantially as described.

15..In combination Vin an apparatus lfor cutting pipe, a main basetrame,a swinging frame mounted thereon, a cutter` carried by theswingingframe, meansffor swinging said frame, aplurality of.interchangeable` stands of rollerstobe mountedon the main base-y frame,said stands of rollers varying in height and as to diameter, of therolls to accommodate pipes ot dill'erent diameters, the smaller diameterrollers being at a higher elevation and closer together as to theircenters than the largerdiameter rollers, and

cutting pipe, a main base frame, a swinging i frame mounted thereom acutter carried by the swinging frame, means for swinging said frame, aplurality of interchangeable stands of rollers to be mounted on the mainbase trame, said stands of rollers varying in height and as to diameterof the rolls to accommodate pipes of different dia-meters, the smallerdiameter rollers being at a higher elevation and closer together as totheir centers than the larger diameter rollers, and an auxiliarysupporting means for the outer end of the pipe comprising a plurality ofsets of rollers of different diameters corresponding to theinterchangeable sets first mentioned permanently set as to spacing oftheir centers, means for supporting the aux iliary rollers, saidsupporting means including a stand and a carrier for the plurality ofsets of rollers, said carrier being turnable in relation to the stand tobring the desired set of rollers in position, to support the outer endof the pipe, substantially as described.

17. In combination in a pipe cutter, a swinging frame, a cutter mountedthereon and a pair of rolls for supporting the pipe, said rolls havingannular ribs and recesses with the ribs of one roll interlocking Withthe recess of the other and a space in one roll receiving the edge ofthe cutter, substantially as described. i

18. In combination in a pipe cutting machine a cutter a supporttherefor, a pair of rolls for supporting the pipe, said rolls havingtheir pipe supporting peripheries inten secting, the cutter operatingthrough a space in one of the rolls, substantially as described.

19. In combination in a pipe cutting machine, a cutter, a supporttherefor, a pair of l rolls ttor supporting the pipe consisting of alarge and a small roll With their pipe supporting peripheriesintersecting and with a space in the small roll receiving the cutter,substantially as described.

20. In a pipe cutter or the like, an arbor having a portion rectangularin cross section, a cutter having a round opening and located on saidrectangular portion, and a collar haring a rectangular opening to litthe rectangular portion of the arbor alongside the cutter and a pinextending from the collar into the cutter to drive the same uponrotation of the arbor, substantially as described.

In testimony whereof, We aflix our signatures.

' WILLIAM R. FOX.

HOWARD D, CORVIN.

